Air Spring: Service and Repair

Air Spring Replacement

Removal Procedure





1. Remove the air suspension system fuse.

Caution: A sudden release of pressure may cause personal injury or damage to the vehicle. The air suspension system is under pressure until the air supply lines are disconnected. Use the following precautions when servicing the air suspension system:
^ Wear gloves, ear protection, and eye protection.
^ Wrap a clean cloth around the air supply lines.

Important: Remove the air suspension system fuse before working on the rear suspension components or the rear axle. Failure to remove the air suspension system fuse could cause the calibration of the air suspension leveling sensor to change and the air suspension system not to function properly.

2. Raise and support the vehicle.
3. Raise and support the rear axle at the designed D-height. Refer to Trim Height Specifications.
4. Depressurize the air suspension system. Refer to Air Suspension Depressurization Procedure.

Notice: Depressurize the air suspension system only after the rear axle is supported and is set between D- Height and Full Jounce.


5. Depress the antirotation peg (2) in the air spring top plate located in the upper spring seat.

Important: There is a raised feature on the outer rim of the air spring top plate that denotes the anti rotation peg position.

6. With the anti rotation peg (2) depressed, rotate the air spring counterclockwise and remove the air spring from the upper spring seat.





7. Disconnect the air supply line from the air spring in the following way:
^ Push the air supply line into the air spring connection and hold in place.
^ Depress and hold the air supply line collet (2) down.
^ Remove the air supply line (1) from the air spring.





8. Remove the air spring from the vehicle.

Installation Procedure





1. Install the air supply line to the air spring. Ensure the air supply line is fully seated.





2. Install the air spring (2) to the frame by aligning the mounting tabs (3) with the keyhole slots (1) in the upper spring seat.

Caution: Ensure that the air spring is fully seated and properly positioned on the axle pilot. Failure to properly position the air spring may cause the air spring to break apart, possibly resulting in personal injury or damage to the vehicle.

3. Apply upward pressure to the air spring (2) and rotate clockwise until the antirotation peg snaps into place.
4. Pressurize the air suspension system. Refer to Air Suspension Depressurization Procedure.
5. Lower the vehicle.
6. Install the air suspension system fuse.
7. Start the vehicle and run for approximately 1 minute to ensure that the air suspension system is functioning properly.
8. Inspect the D height. Refer to Trim Height Inspection Procedure.